Heather Morris’ Ab-tastic Glee Performance

Last night on Glee, Heather Morris was everything we hoped she'd be while channeling Britney Spears: hilarious, on key and in step. And hey, who knew the simple Cheerio was hiding such an awesome body?

Fun fact: Morris, who plays Brittany S. Pierce on FOX’s hit show, was a back-up dancer for Beyonce for a year and a half starting back in 2007, and returned to perform live with her for “Single Ladies.”

Last night, she portrayed another pop diva in Glee‘s most-hyped episode yet, donning Spears’ iconic costumes–including the red catsuit from her music video for “Oops I Did It Again,” the infamous nude, sequined bodysuit from her MTV VMA performance of the same song in 2000, and the skimpy costume (snake included) from her 2001 MTV VMA performance of “I’m A Slave 4 U,” which Morris also sang in the episode. Watch Morris show off her singing and dancing chops below: